Haven't watched it yet but it's in my list.
I was nervous too. Space walk seems easy; you float around. But the early space walkers found it extremely fatiguing, coming back in soaked in sweat. Some almost didn't make it back, Cernan for example. Only after they put more hand and foot holds on were they able to manage it, with Buzz Aldrin the first to test out the holds and manage it. Every little motion and touch sends an equal amount of energy in the opposite direction, plus there's nothing to stabilize yourself to alter your direction or propel yourself towards a vector. Space walks were one of the most surprising revelations when I started reading the biographies of astronauts. It made sense after they told their stories but it was not at all what I had imagined. Those SpaceX walkers could have had a rough time if they decided to go floating off with only their umbilical cord. You notice how controlled their movements were? I was surprised by the second EVA who started waving their arms (still holding onto the rail). I wonder if that was planned or spontaneous.
I bet the Apollo astronauts would have loved to have had these new suits. I'm curious too to learn how they are made and compare them to all the layers of the early suits.